The proper (and realistic) answer is: "Sure, right to a police station after breaking the restraining order I have against you for breaking and entering, voyeurism, and others."
You're overthinking it. Back when Saku disappeared In MIka's inner monologue she admitted it was her, she even teased him with the mole, but he didn't realize.
Ok ,I am calling it. He is going to die. It will be homicide and suicide and people will interpret it as lovers suicide since otaku and idol were dating.